Dental equipment apparatus



NOV 5, 1929 A. F. PIEPER DENTAL EQUIPMENT APPARATUS Filed May 6, 1925 www@ ` lNVlgNoR. 71562. Plf/Cr /L'S A TTORNEY Y Figure itisan Patented Nov.v 5, 1929 i tram ALPHONSE FPIEPER, OE ROCHESTER, NEW YORK DENTAL EQUIPMENT APPARATUS Application med May e,

of the equipment whereby it will be compact,

eicient,economical to construct and convenient to operataf f V A further object of the invention is to y 10 provide dental equipment stands or pedestals having equipment supporting arms adapted to swing one upon another'and provided with improved fuel control. means for a burner carried byy one of the arms. y j

To theseand other ends the invention resides in certain improvements and combina-` tions of parts, all as will be hereinafter more fully described, the novel features being ointedvout in the claims at the end-'of the y specification. n A

In the drawingszi Figure 1 is a fragmentary front elevation of a dental equipment stand embodying the Vpresent invention; Y j Figure 2 is a part sectional elevation on an enlarged scale showing the manner of mounting the fuel supply connections for the burner; Y f j Figure 3 is an enlarged fragmentary secf tional elevation takenv centrally'through the lower valve and pipe joint shown Vin Figure 2, and

valve and pivotal connection for therelativerly movable arms shown in Figures 1 and 2;

Similar reference numerals throughout the fseveralviews indicate the same parts.l

` The embodiment of the invention disclosed n 4Q herein, by way of illustration, comprises a hollow main supporting column or standard 10 of any preferred design, only a portion of Madapted to swing Iupon a somewhat longer 59 arm4v 15'- which-isp1vote`d to,V swingV about i the enlarged fragmentary sec-Y tional elevation throu'gh'thel burner control y 1925. Serial No. 28,484.

axis 16 of the stationary arm or bracket 11. A tubular member 17 forms a pivotal connection between the arms ltfand 15 and is preferably held rigid upon the latter jby a 'set screw 18.V The tubular member 17 carries a hollow extension 19 upon which is mounted any desired typerof gas burner 20 preferably v located adjacent lthe tray'13 as shown in Figure 1.

rl`he pivotedl arm 15 is preferably channel shaped Aand adapted to receive and conceal a fuel or gas supply pipe 21, the outer end of which is connected with the tubular pivot member 17' and adapted to dischargeintov a valve chamber 22 therein. A needle valve V23, preferably ofthe thrust type, isdisposed withinthe chamber and adapted to regulate the flowV of gas tothe burner through the reduced outlet passage 24 and the supply passage 25 leading to the burner.V v The valve is prevented from turning preferably by a screw 26 having its inner end reduced and projected into a slotV 27 formed upon the enlarged por- Y tion 28 of the valve, said portion having a threaded extension 29 as shown in Figure 4,

The extension 29 is threaded into an operatingeXtensionBO havingahandle 31 suitably I connected therewith .for operating the same.

`The extension 30` is held against longitudinal movement'in one direction by a member 31a preferably kscrewed into the tubular pivot member 17 against an enlarged portion 32 on the valve operating member 30.v The 'en-V A larged yportion 32 is slightly smaller in diameter than the recess in which yit operates andy is held against, inward movement b v a shoulder 33 formed in the base of the tube 17. f A' fluid tight joint is provided around 1 the valve operating stem by means ofy suitablel packing 34:'compressed by a rsleeve 35 forming a bearingfor the operating member v30, the sleeve being forced'against the packing by a nut 36' shouldered at 37 to engagev the sleeve as shown in Figure 4.; The nut 36 also serves to prevent outward displacement of the pivotal member'17. e Y

The rigid fpipe 21 is connectedV at its innerV endrwith a hollow Vmember 38, the upper end of which Visfdisposedl in a recess 39 formed in a boss lilreporton 4;() of the arm l5 as shown vloro Y in Figure 2. A fuel supplypipe 41 is adapted to discharge into the hollow member 38 through a suitable connection 42, the pipe andconnection being supported 'by the hollowk member 38 which is secured by al pin, not shown, extended into a. groove 38 formed therein. rlhe pipe 4l at its lower end is provided with a substantially right angle portion 43 screwed into ahead 44 having a tubu# lar member 45 rotatably disposed in 'a casing V4G, the axis of the tube 45 being coincident' with the axis of rotation ofthejariu l5 as in-. dicated by the dot and dash line 16.V This construction permits the luse of irigidgpipe line connection through from the column 10 to' the burner 2O,l thus avoiding the-usual flexible tubing providedfor Conveying the gasto the burner which is unsightly'landlcss .durable-'than the presen-#form oi'- constructien.r `The tube 451 eonneetslwith a valve. chamber 47 in the easingll, which in turn- `conneets with a supply. pipe -48 extending upW-ardl-y through,the coluinn'l() 'from a suitable supply source not shown. :The casingV 46 is secured within a reess 49A formed in the stationaryarm or bracket l1 vpreferably by abolt 50. Inorder yto,accurz'ttelycenter the casing with' the pivotal axis oi"l the arm'l f the stationary larin- 1l is provided, above 'the recess 49., with a horizontally disposed plateV portion 51- through which is drilled an opening 5,2 'which is properly alined' withf the pivotalfaxis'of said arm and adapted toreceive an accurately turned portion '5310i the casing', said portion being closely fitted within said opening-whereby lateral movement of the casing is `prevented andthetube A45y held in' perfect alinennent"withz Lthe *pivotal* axis'foiv the 15 The casing `46`is prefer@ ably adapted to have an additional bearingV as at 54 uponl thevertical lortion; 55 of the,H arm l1.' fluid tight joint for therevoluble c tubef45 Y, yis I-provide'd the, lower 1 end/oi the Y easing *46, embodying suitable packing 56 surrounding the ytube which is'compressed a sleeve 57 forming a bearing :tor'tlie'tube and secu-red by a nuttlireaded upon thecasing. lThe nut is providedwith airinwardly eX-g tended portion` 5,9 engaging a shoulder'on the sleeve 57 whereby to actuatethe latter.y

. The casing y46;'is Lpro-vided rwith4 a hollow extension 6.0, in whichl is vdisposedga valve as shown in Figure, forclosi-ng the-pipe .48v

whenever desired, said valve `andassoeiated *burner arts beine' "oreferabl constructed similar p n y to the one described above in connection with.

Figure 4 and given"4 the saine reference characters, so that further ydescription ofV the The fuel supply pipes, valves and; connections are advantageously#disposed. upon :the motor'supporting and trayholdnigarms ofthe unitandV afford ari/economical arr'anoement whichk permits' vthe itray burner car-` Vrying arms to 'swingfreelyupon their pivots Without injury to said pipes and connections.

Furthermore,it Willbe noted that the supply pipe 41, motor carrying' arm l2, and tray and burner .holding arm l5 all have' a common axis about which they 'are adapted to swing,

Whereby'one member, such as the arm 11, is utilized tol form a .support for all of saidparts.' f

I claim vas my invent-ion: n c Y l.V In .dental equipment apparatus, 'aV` standard, an arm pivotally connectedtherewith, a burneracarried by the arm, a rigid Vfuel supply pipe forv the burner seeureduuponv onel end VVconnected with theb-urnerand the other pivotedn belowV 'the upon' y the bracketto swing with the arm aboutthe piv-vr ota-l axis thereof, said pipe passingfrom the arm tothe bracketV independently of the piv-l otal mounting of said arm `ron said bracket,

and a supply conduit connected Vwith last mentioned end ofvsaid pipe.

3. in dental Vequipment apparatus, a standed to swing upon the bracket, a burner carried by theUarm, a casing carried bythe bracket independently ofthe ypivotal lconnection between the arm and thebraeket, a rigid fuel supply pipe havingone endconneeted with the burner and the other rotatably l disposed Vwithin the casing, and/a .fuel supply connection leading to the casing.'

4.' In dental equipment ,vapparatus I standard, a valve including a casing conneetedg'with the standard,- an arm pivotally connected with the-'standard' at a pointjspa'ced from said casing, aburner carried by the arm-7 a fuel supply v pipe for :the l,burner y,secured- .upon thel arm and having its in'letend pivot' ally disposed withinlthecasing and adapted tov be rotatedby' the arm, a supply conduit l connectedwith the casing, and a valvecon- K pply* pipe, auijacveiit the nested' with the su v5. In; dental. -iquipineiit apparatus, Y' a' standard, .a vertically disposed arm carried' therebyffafseond arm adapted t0.- sivug upony the irst, aburner carried by Said second arm.,

a fu-el. supply pipe fortheburnerincluding a. p ortioniixed upQnthe second-mentioned c arm and another portion vproie'cting thereyfrom exteriorly oit-"the 'first;linen-tioned'` arm and lpi'votalf'lyconneetedi V Withthe latter-7. whereby to; swing 'with the-'seeond 'men-tioned`v soVV secondsupply pipe C011'-v H ard, a bracket fsecuredthereon, ani'a'rm adapt#V ros iio

. adapted to swing upon the bracket, a second Ythe arm, a table,

arm, and a supply conduit V'connected with said pipe. Y

Y 6. In dental equipment apparatus, a standard, an arm pivotally connected therewith, a burner carried by said arm, a fuel supply pipe for the burner secured upon the arm and having its inlet end projecting therefrom, a casing supported by the standard with which said inlet end is vpivotally connected, said casing being independent of such pivotal connection, a supply conduit connected with said casing, and a control valve for the supply pipe connected with the casing.

7. In dental equipment apparatus, a column, a bracket secured thereon, an arm adapted to .swing upon the bracket, a motor support ada-ptedto swing about the pivotal v axis of the arm, a burner carried by the arm,

and a fuel supply pipe for the burner secured upon the arm having a portionrotatably disposed upon the Vbracket' coincident with and spaced from the pivotal axis of the arm whereby to swing with the latter.

8. In dentalV equipment apparatus, a column, a bracket secured' thereon, Yan armY adapted to swing upon theV bracket, a motor support adapted to swing about the pivotal axis of the arm, a'burner carried by the arm, a tubular member secured Vupon the bracket with and spaced from its longitudinal axis coincident with the pivotal axis ofthe arm, and a fuel supply pipe for the burner secured upon the arm and having one end rotatably disposed in said tubular member wherebyA said pipe is adapted to swing with the arm.

9. In dental equipment apparatus, a column, a bracket secured thereon, an arm pivoted upon the bracket, a motor support adapted to swing about the pivotal axis ofv anarm for supporting the table, a burner, and a fuel supply pipe for the burner including a portion adapted to form a` pivot upon which the second mentioned arm is Vadapted'to swing, and also a portion pivotally disposed upon said bracket whereby the first mentioned arm is adapted to swing relative to the bracket.

10. In dental equipment apparatus, a column, a bracket secured thereon, an arm arm'mounted uponthe first, a table carried by said second arm", a burner, and a fuel supply pipe for theburner forming a pivot for the second mentioned arm andfhaving its inlet-end pivotally connected with the bracket independently of the first mentioned arm at point Abelow the latter. Y 11. In dental equipment apparatus, a column, an arm pivotally ,connected therewith, a burner disposedat one side of the arm, a

,fuel supplypipe for the burner including a portion projecting laterally from the arm, a table holding arm pivotally disposed .upon

^ said laterally projectingpipe portion and j disposed arm, aV tubularrmember mounted meansmounted upon the column independently lof the arm-'adapted to pivotally receive the inlet end of the pipe.

12. 4In dental -equipment apparatus, a colva fuel control valve adjustable in said vertical portion, and v`a second arm pivotally mounted upon said vertically disposed' pipe portion to swing relative to the first mentioned arm.

k13. In dental-equipment apparatus, a column, an arm projecting therefrom, a tubular member vertically disposed upon said arm, a burner connected with said tubular member, a ifuel controlled valve adj ust-able within said tubular member, av second arm mounted to swing uponv said tubularv member, and a fuel supply pipe connected with the tubular member and having itsfinlet vend connected -with the colun'in'independent-ly of saidl arms.

14. In dental equipment apparatus,- a column, avertically disposed armxcarried thereby, a laterally extending arm mounted to swing upon the `upper end of said vertically uponY the Afirst mentioned army adjacent the lower end thereof with its Vlongitudinal axis coincident with the'pivotal axis of the laterallyy extending arm, a `fuel' supply-pipe secured upon the'laterally extending arm and having one end pivotally` disposed within said tubular member, and a burner connected with the other end of said pipe.

15. In dental equipment apparatus, a standard, an arm pivotally connected therewith, a burnerV carried by the arm, a rigid supply pipe having its outer end connected with the burner and having a portion de-- pending from t-he arm and provided with an inlet end pivotally connected with the standard below the arm, and means connecting the pipe with the arm. l

16. jIn dental equipment apparatus, a

standard, a vertically disposed arm thereon,

a second arm adapted to swing upon the first ,f mentioned'arm, a burner carried by the second arm, a casing upon the first mentioned Varm positionedv below the pivotal connection wardly therefrom, a Vbranch arm pivoted to n Vsaid main arm, a gas'pipe in said Vmain arm,

a gaspipe in said branch arm, a' gas coupling having a stationary member mounted on said main arm and connected with said main arm gas pipe, said coupling having a. movable. Y Y Y member rot-atableon an aXiS coincident with t the pivot axis of saidbraneh arm, .a connect;V ff 7 ingpipe outside of said main armrand eX- l tending from said movable coupling member to the gas pipe in said branch arlnyand a valve controllingl .the gags :oW through ysaid v coupling. Y l f; Y l

1 8..V In dental equipment apparatus, A a 1 Vstandard, an pivotallyy Connected there- Ywith, a burner carriedby the arm, a pipe couvpling secured to the standard independently of the arm and bellowthe point of connection of the arm with the standard,v a pipe Secured to the arm and having an outer end clonneet-v Si ed with the burner and an inner en d'eXtend-y Y Ving below the arm and rotatably connected Withthe` coupling, asupply pipe leading. to the coupling, a Valve for regulating .the volurne of iuid `discharging romvtlie supply pipe to the iirst mentioned pipe and a second valve forA Closing the Outery endeof said irst Y I'nentionedpipe.` t .Y l i y19. In dental eqnipnientrapparatus; acolumn, an arm -piyotally connected therewith y to swing.relativetheretgajfuel supply pipeV connected with the arm includingva portion projecting'laterally from oneside thereof,

said pipe having an ,inlet end extending be-l lowvthe arm,V means mounted upon the vcol'- umn below the arm in Ywhich the inlet end 0i.

said pipe isipivotally! mounted, a burner onv the laterally projectingv portion e of the Ipipe,

anda second arm pivotedtol swing about the axis'of said projecting pipe portion. 5 ALPHONSE y PEPER-a feo ,ige-aegee 

